Functional Modification Of Ordered Mesoporous Carbon And Its Removal Of New Organic Pollutants

Emerging organic contaminants?EOCs?are a type of great harmful organic compounds.Due to the lower concentration in an aqueous environment,traditional methods can not efficiently remove it.In this study,preparation of high specific surface area and pore-ordered mesoporous carbon material?OMC?was prepared.Then metal with catalytic effect was successfully loaded on OMC.Combined with new advanced oxidation processes?AOPs?,removal process was established in the degradation of typical template compound tetrabromobisphenol A?TBBPA?.Functionalized composite materias have overcome the shortcomings of metal oxide particles with easily oxidized inactivation and easy agglomeration,greatly compensate for the limitations of traditional materials and methods.The contents are as follows:1,Soft template-Single template method was used to prepare OMC.Phenol and formaldehyde as raw materials,synthesized phenolic resin as a carbon source,and surfactants F127 as a template,the conditions of the manufacturing process were discussed: phenol: formaldehyde =1: 2?m/m?,F127: phenolic resin=1:1?m/m?,Curing temperature was 100?,Calcination temperature was 800? under N2 atmosphere protection,the structure of OMC samples was ordered with a pore diameter of 3.8 nm and a surface area of 523 cm²g^-1.2,Fe?NO₃?₃·9H₂O as metal source,NaBH4 as reducing agent,the blank OMC load zero valent iron particles.Mesoporous structure of Fe/OMC was ordered,containing two forms of iron particles Fe and Fe₂O₃.The pore diameter of Fe/OMC-0.2 was 3.7 nm,and the specific surface area was 457 cm²g^-1.3,Comparative study of OMC and Fe/OMC for TBBPA removal.In the Fenton system of Fe/OMC and H₂O₂,when the concentration of H₂O₂ is 10 mmol/L,pH=3,and the dosage of Fe/OMC is 0.4g/L,the balance biodegradation rate can reach more than 95%.But removal of OMC is not affected by pH and oxidant concentration of H₂O₂.The removal rate is above 70% and can be increased up to 90% with the dosage increase.The removal of OMC reused three times was from 71.07% down to 51.78%;and Fe/OMC reused three times from 94.21% to 56.05%.4,Use dual template method to prepare OMC and Co/OMC.TEOS: phenolic resin = 2:1?m/m?,the optimal amount of cobalt source inputs for the Co/OMC is0.1?the weight ratio of cobalt nitrate and phenolic resin is 0.1?.The structure of Co/OMC was ordered,cobalt particles was in existence of Co2O₃ form.The pore diameter of OMC is 3.9 nm,the specific surface area is 632 m²g^-1,and Co/OMC are3.8 nm and 576 m²g^-1.5,Mainly study advanced oxidation degradation of Co/OMC for TBBPA.The romoval of Co/OMC reached 95.4% by batalyzing persulfate.Without persulfate the removal of OMC and Co/OMC were 63.2% and 73.6%.The optimal conditions were:when initial concentration of TBBPA is 100 mg/L,initial pH is 3,dosage of PDS is 6mmol/L,Co/OMC is 400 mg/L,at 30?,the reaction is 120 min,the removal of degradation can reach equilibrium,TBBPA removal rate was 95.85%.Degradation kinetics order kinetics model.The removal of OMC reused three times was up to87.2%.Compared to synthetic Fe/OMC,it showed that Co/OMC composites have good prospects.